#B4231C#B4231C

#B4231C is a mid, vivid red. Relative luminance 0.110; OKLCH L 50.1% C 0.182 H 28.6°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#B4231C
RGB	rgb(180, 35, 28)
HSL	hsl(3, 73%, 41%)
HSV	hsv(3, 84%, 71%)
CMYK	cmyk(0%, 80.6%, 84.4%, 29.4%)
CIE-LAB	lab(39.57, 56.06, 41.45)
CIE-LCH	lch(39.57, 69.72, 36.48°)
OKLab	oklab(50.07% 0.1594 0.087)
OKLCH	oklch(50.07% 0.182 28.6)
XYZ	xyz(19.6355, 10.9924, 2.1863)
Luminance	0.1099 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4231C #1CADB4

analogous

#B41C61 #B4231C #B46F1C

triadic

#B4231C #1CB423 #231CB4

tetradic

#B4231C #61B41C #1CADB4 #6F1CB4

square

#B4231C #61B41C #1CADB4 #6F1CB4

split-complementary

#B4231C #1CB46F #1C61B4

monochromatic

#4A0E0C #7F1914 #B4231C #DF372F #E76A64

Accessibility & contrast

On white

6.57

#B4231C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#B4231C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4231C

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4231C	#FFFFFF	#000000	##FFFFFF
##B4231C	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524919

Deuteranopia (green-blind)

#756813

Tritanopia (blue-blind)

#C70024

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b4231c;
/* rgb */ color: rgb(180, 35, 28);
/* oklch */ color: oklch(50.1% 0.182 28.6);

Tailwind

colors: {
  custom: {
    50: '#d56c5a',
    500: '#b4231c',
    950: '#000000',
  },
}

SCSS

$custom: #b4231c;
$custom-light: #d56c5a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4231c",
  "rgb": {
    "r": 180,
    "g": 35,
    "b": 28
  },
  "hsl": {
    "h": 2.763,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.50066,
    "c": 0.1816,
    "h": 28.6
  },
  "luminance": 0.10989
}

Semantic roles & 50–950 ramp

primary

#B4231C

secondary

#60C7CC

accent

#E7F038

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B4231C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →